Blade of Kusanagi: Chidori Katana

Kusanagi Blade: Chidori Katana is a chakra flow technique in which Sasuke Uchiha channels concentrated Chidori through his sword. The blade is filled with Lightning chakra, emitting a piercing chirping sound and gaining the ability to easily cut through steel. Upon hitting a target, the electric discharge pierces the opponent's body, causing a sharp muscle contraction and complete numbness, which deprives the victim of the ability to move. The only effective countermeasure is a counterflow of lightning chakra in the opponent's weapon — this is exactly how Killer Bee managed to parry the strikes of this katana with his own charged blades.